Hi all, I have a very strange issue here, after I read a lot of posting about the telnet problem no one resolving mine, actually I have everything configurated, well is not much, but I do not have any access list, no firewall between, only nat and I do not think this was the problem, the thing is that after telnet the IP I receive an Open, but almost instantly close the session, in the case of the SSH I receive the prompt for the password, but when I introduce the correct password the ssh session close. I do not receive any message, just that the foreing host closed. Remote Router: INTERNET_TMX#telnet 9.2.8.1 Trying 9.2.8.1 ... Open [Connection to 9.2.8.1 closed by foreign host] INTERNET_TMX#ss INTERNET_TMX#ssh -l cisco 9.2.8.1 Password: [Connection to 9.2.8.1 closed by foreign host] Config; ip nat inside source route-map nonat interface Dialer1 overload ! ip access-list extended lan2lan permit ip 192.168.225.0 0.0.0.255 192.168.0.0 0.0.255.255 permit ip 192.168.226.0 0.0.0.255 192.168.0.0 0.0.255.255 ip access-list extended nat deny ip 192.168.225.0 0.0.0.255 192.168.0.0 0.0.255.255 deny ip 192.168.226.0 0.0.0.255 192.168.0.0 0.0.255.255 permit ip 192.168.225.0 0.0.0.255 any permit ip 192.168.226.0 0.0.0.255 any ! route-map nonat permit 1 match ip address nat ! line con 0 logging synchronous login local no modem enable line aux 0 line 2 no activation-character no exec transport preferred none transport input all transport output pad telnet rlogin lapb-ta mop udptn v120 ssh line vty 0 4 login local no exec transport input telnet ssh ! end Debug: GW_MONMORELOS#debug telnet *Jul 9 22:53:13.974: Telnet67: 1 1 251 1 *Jul 9 22:53:13.974: TCP67: Telnet sent WILL ECHO (1) *Jul 9 22:53:13.974: Telnet67: 2 2 251 3 *Jul 9 22:53:13.974: TCP67: Telnet sent WILL SUPPRESS-GA (3) *Jul 9 22:53:13.974: Telnet67: 80000 80000 253 24 *Jul 9 22:53:13.974: TCP67: Telnet sent DO TTY-TYPE (24) *Jul 9 22:53:13.974: Telnet67: 10000000 10000000 253 31 *Jul 9 22:53:13.974: TCP67: Telnet sent DO WINDOW-SIZE (31) GW_MONMORELOS#debug ip ssh Incoming SSH debugging is on GW_MONMORELOS# GW_MONMORELOS# GW_MONMORELOS# *Jul 9 22:55:02.254: SSH0: starting SSH control process *Jul 9 22:55:02.254: SSH0: sent protocol version id SSH-2.0-Cisco-1.25 *Jul 9 22:55:02.270: SSH0: protocol version id is - SSH-1.99-Cisco-1.25 *Jul 9 22:55:02.270: SSH2 0: send:packet of length 344 (length also includes padlen of 5) *Jul 9 22:55:02.270: SSH2 0: SSH2_MSG_KEXINIT sent *Jul 9 22:55:02.274: SSH2 0: ssh_receive: 344 bytes received *Jul 9 22:55:02.274: SSH2 0: input: total packet length of 344 bytes *Jul 9 22:55:02.274: SSH2 0: partial packet length(block size)8 bytes,needed 336 bytes, maclen 0 *Jul 9 22:55:02.274: SSH2 0: input: padlength 5 bytes *Jul 9 22:55:02.274: SSH2 0: SSH2_MSG_KEXINIT received *Jul 9 22:55:02.274: SSH2:kex: client->server enc:aes128-cbc mac:hmac-sha1 *Jul 9 22:55:02.274: SSH2:kex: server->client enc:aes128-cbc mac:hmac-sha1 *Jul 9 22:55:02.294: SSH2 0: ssh_receive: 24 bytes received *Jul 9 22:55:02.294: SSH2 0: input: total packet length of 24 b GW_MONMORELOS#ytes *Jul 9 22:55:02.294: SSH2 0: partial packet length(block size)8 bytes,needed 16 bytes, maclen 0 *Jul 9 22:55:02.294: SSH2 0: input: padlength 6 bytes *Jul 9 22:55:02.294: SSH2 0: SSH2_MSG_KEX_DH_GEX_REQUEST received *Jul 9 22:55:02.294: SSH2 0: Range sent by client is - 1024 < 2048 < 4096 *Jul 9 22:55:02.294: SSH2 0: Modulus size established : 2048 bits *Jul 9 22:55:02.294: SSH2 0: send:packet of length 280 (length also includes padlen of 8) *Jul 9 22:55:02.350: SSH2 0: expecting SSH2_MSG_KEX_DH_GEX_INIT *Jul 9 22:55:02.486: SSH2 0: ssh_receive: 272 bytes received *Jul 9 22:55:02.486: SSH2 0: input: total packet length of 272 bytes *Jul 9 22:55:02.486: SSH2 0: partial packet length(block size)8 bytes,needed 264 bytes, maclen 0 *Jul 9 22:55:02.486: SSH2 0: input: padlength 5 bytes *Jul 9 22:55:02.486: SSH2 0: SSH2_MSG_KEXDH_INIT received *Jul 9 22:55:02.598: SSH2 0: signature length 143 *Jul 9 22:55:02.598: SSH2 0: send:packet of length 576 (length also includes padlen of 7) *Jul 9 22:55:02.602: SSH2: kex_derive_keys complete *Jul 9 22:55:02.602: SSH2 0: send:packet of length 16 (length also includes padlen of 10) *Jul 9 22:55:02.602: SSH2 0: newkeys: mode 1 *Jul 9 22:55:02.602: SSH2 0: SSH2_MSG_NEWKEYS sent *Jul 9 22:55:02.602: SSH2 0: waiting for SSH2_MSG_NEWKEYS *Jul 9 22:55:02.858: SSH2 0: ssh_receive: 16 bytes received *Jul 9 22:55:02.858: SSH2 0: input: total packet length of 16 bytes *Jul 9 22:55:02.858: SSH2 0: partial packet length(block size)8 bytes,needed 8 bytes, maclen 0 *Jul 9 22:55:02.858: SSH2 0: input: padlength 10 bytes *Jul 9 22:55:02.858: SSH2 0: newkeys: mode 0 *Jul 9 22:55:02.858: SSH2 0: SSH2_MSG_NEWKEYS received *Jul 9 22:55:02.858: SSH2 0: ssh_receive: 52 bytes received *Jul 9 22:55:02.858: SSH2 0: input: total packet length of 32 bytes *Jul 9 22:55:02.858: SSH2 0: partial packet length(block size)16 bytes,needed 16 bytes, maclen 20 *Jul 9 22:55:02.858: SSH2 0: MAC compared for #4 :ok *Jul 9 22:55:02.858: SSH2 0: input: padlength 10 bytes *Jul 9 22:55:02.858: SSH2 0: send:packet of length 32 (length also includes padlen of 10) *Jul 9 22:55:02.858: SSH2 0: computed MAC for sequence no.#4 *Jul 9 22:55:02.874: SSH2 0: ssh_receive: 84 bytes received *Jul 9 22:55:02.874: SSH2 0: input: total packet length of 64 bytes *Jul 9 22:55:02.874: SSH2 0: partial packet length(block size)16 bytes,needed 48 bytes, maclen 20 *Jul 9 22:55:02.874: SSH2 0: MAC compared for #5 :ok *Jul 9 22:55:02.874: SSH2 0: input: padlength 19 bytes *Jul 9 22:55:02.874: SSH2 0: send:packet of length 48 (length also includes padlen of 8) *Jul 9 22:55:02.874: SSH2 0: computed MAC for sequence no.#5 *Jul 9 22:55:02.890: SSH2 0: ssh_receive: 116 bytes received *Jul 9 22:55:02.890: SSH2 0: input: total packet length of 96 bytes *Jul 9 22:55:02.894: SSH2 0: partial packet length(block size)16 bytes,needed 80 bytes, maclen 20 *Jul 9 22:55:02.894: SSH2 0: MAC compared for #6 :ok *Jul 9 22:55:02.894: SSH2 0: input: padlength 16 bytes *Jul 9 22:55:02.894: SSH2 0: send:packet of length 48 (length also includes padlen of 11) *Jul 9 22:55:02.894: SSH2 0: computed MAC for sequence no.#6 *Jul 9 22:55:05.778: SSH2 0: ssh_receive: 52 bytes received *Jul 9 22:55:05.778: SSH2 0: input: total packet length of 32 bytes *Jul 9 22:55:05.778: SSH2 0: partial packet length(block size)16 bytes,needed 16 bytes, maclen 20 *Jul 9 22:55:05.778: SSH2 0: MAC compared for #7 :ok *Jul 9 22:55:05.778: SSH2 0: input: padlength 7 bytes *Jul 9 22:55:05.782: SSH2 0: send:packet of length 16 (length also includes padlen of 10) *Jul 9 22:55:05.782: SSH2 0: computed MAC for sequence no.#7 *Jul 9 22:55:05.786: SSH2 0: authentication successful for citrofrut *Jul 9 22:55:05.798: SSH2 0: ssh_receive: 68 bytes received *Jul 9 22:55:05.798: SSH2 0: input: total packet length of 48 bytes *Jul 9 22:55:05.798: SSH2 0: partial packet length(block size)16 bytes,needed 32 bytes, maclen 20 *Jul 9 22:55:05.802: SSH2 0: MAC compared for #8 :ok *Jul 9 22:55:05.802: SSH2 0: input: padlength 19 bytes *Jul 9 22:55:05.802: SSH2 0: channel open request *Jul 9 22:55:05.802: SSH2 0: send:packet of length 32 (length also includes padlen of 10) *Jul 9 22:55:05.802: SSH2 0: computed MAC for sequence no.#8 *Jul 9 22:55:05.818: SSH2 0: ssh_receive: 84 bytes received *Jul 9 22:55:05.818: SSH2 0: input: total packet length of 64 bytes *Jul 9 22:55:05.818: SSH2 0: partial packet length(block size)16 bytes,needed 48 bytes, maclen 20 *Jul 9 22:55:05.818: SSH2 0: MAC compared for #9 :ok *Jul 9 22:55:05.818: SSH2 0: input: padlength 13 bytes *Jul 9 22:55:05.818: SSH2 0: send:packet of length 16 (length also includes padlen of 6) *Jul 9 22:55:05.818: SSH2 0: computed MAC for sequence no.#9 *Jul 9 22:55:05.818: SSH2 0: pty-req request *Jul 9 22:55:05.818: SSH2 0: setting TTY - requested: height 47, width 132; set: height 47, width 132 *Jul 9 22:55:05.830: SSH2 0: ssh_receive: 52 bytes received *Jul 9 22:55:05.830: SSH2 0: input: total packet length of 32 bytes *Jul 9 22:55:05.834: SSH2 0: partial packet length(block size)16 bytes,needed 16 bytes, maclen 20 *Jul 9 22:55:05.834: SSH2 0: MAC compared for #10 :ok *Jul 9 22:55:05.834: SSH2 0: input: padlength 12 bytes *Jul 9 22:55:05.834: SSH2 0: send:packet of length 16 (length also includes padlen of 6) *Jul 9 22:55:05.834: SSH2 0: computed MAC for sequence no.#10 *Jul 9 22:55:05.834: SSH2 0: shell request *Jul 9 22:55:05.834: SSH2 0: shell message received *Jul 9 22:55:05.834: SSH2 0: starting shell for vty *Jul 9 22:55:05.934: SSH2 0: send:packet of length 48 (length also includes padlen of 18) *Jul 9 22:55:05.934: SSH2 0: computed MAC for sequence no.#11 *Jul 9 22:55:05.934: SSH2 0: send:packet of length 16 (length also includes padlen of 6) *Jul 9 22:55:05.934: SSH2 0: computed MAC for sequence no.#12 *Jul 9 22:55:05.934: SSH2 0: send:packet of length 16 (length also includes padlen of 6) *Jul 9 22:55:05.934: SSH2 0: computed MAC for sequence no.#13 *Jul 9 22:55:05.934: SSH0: Session terminated normally Any advice... Thanks, Cesar
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